JPH07309976A - Flame-retardant rubber composition - Google Patents
Flame-retardant rubber compositionInfo
- Publication number
- JPH07309976A JPH07309976A JP10310094A JP10310094A JPH07309976A JP H07309976 A JPH07309976 A JP H07309976A JP 10310094 A JP10310094 A JP 10310094A JP 10310094 A JP10310094 A JP 10310094A JP H07309976 A JPH07309976 A JP H07309976A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- weight
- flame
- rubber composition
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003063 flame retardant Substances 0.000 title claims abstract description 26
- 229920001971 elastomer Polymers 0.000 title claims abstract description 25
- 239000005060 rubber Substances 0.000 title claims abstract description 25
- 239000000203 mixture Substances 0.000 title claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 13
- 239000010439 graphite Substances 0.000 claims abstract description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 8
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 8
- 239000006229 carbon black Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、難燃性ゴム組成物に関
するものであって、より詳しくは、多量の難燃剤を添加
することなく、ドリッピングの発生を抑えられ難燃性を
向上させることのできる難燃性ゴム組成物に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame-retardant rubber composition, and more specifically, it suppresses the occurrence of dripping and improves the flame retardancy without adding a large amount of flame retardant. The present invention relates to a flame-retardant rubber composition that can be used.
【０００２】[0002]
【従来技術及びその問題点】従来、電線やケーブルの外
被、自動車用の各種部品等には、ゴムに難燃剤を添加し
たもの（以下、「難燃性ゴム組成物」と記すことがあ
る。）が使用されている。ところで、難燃性ゴム組成物
においては、燃焼時において溶融滴下現象（ドリッピン
グ）が発生するのを防止するために、難燃剤を多量に使
用しなければならず、不経済であると共に難燃性ゴム組
成物の硬さ等の物性も低下してしまうという問題があ
る。2. Description of the Related Art Conventionally, a sheath of an electric wire or a cable, various parts for automobiles, and the like are made by adding a flame retardant to rubber (hereinafter sometimes referred to as "flame-retardant rubber composition"). .) Is used. By the way, in a flame-retardant rubber composition, a large amount of a flame retardant must be used in order to prevent a melt dripping phenomenon (dripping) from occurring during combustion, which is uneconomical and flame-retardant. There is a problem that the physical properties such as hardness of the natural rubber composition are also deteriorated.
【０００３】また、上記難燃性ゴム組成物を電子写真プ
ロセスにおける帯電ロール、現像ロール等の導電性ロー
ルに使用する場合には、導電性を確保するために、通
常、カーボンブラックを多量に添加する必要があるが、
カーボンブラック自体が燃焼し易いため、難燃性が低下
してしまうという問題もある。When the above flame-retardant rubber composition is used in a conductive roll such as a charging roll and a developing roll in an electrophotographic process, a large amount of carbon black is usually added to ensure conductivity. But you have to
There is also a problem that the flame retardancy is lowered because the carbon black itself is easily burned.
【０００４】[0004]
【発明の目的】そこで、本発明の目的は、多量の難燃剤
を使用することなく、ドリッピングを抑えられ、難燃性
を向上させることのできる難燃性ゴム組成物を提供する
ことにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a flame-retardant rubber composition capable of suppressing dripping and improving flame retardancy without using a large amount of flame retardant. .
【０００５】[0005]
【課題を解決するための手段】本発明は、前記目的を達
成するために提案されたものであって、下記の構成から
なることを特徴としている。すなわち、本発明によれ
ば、ゴム１００重量部に対して、赤リン５ないし２０重
量部、金属水酸化物３０ないし１００重量部、及び黒鉛
５ないし１００重量部を配合したことを特徴とする難燃
性ゴム組成物が提供される。なお、本発明において、黒
鉛粉末は、鱗状黒鉛、土状黒鉛、人造黒鉛のいずれを用
いてもよい。The present invention has been proposed in order to achieve the above object, and is characterized by having the following constitution. That is, according to the present invention, it is characterized in that 5 to 20 parts by weight of red phosphorus, 30 to 100 parts by weight of metal hydroxide, and 5 to 100 parts by weight of graphite are mixed with 100 parts by weight of rubber. A flammable rubber composition is provided. In the present invention, the graphite powder may be any of scaly graphite, earthy graphite, and artificial graphite.
【０００６】[0006]
【発明の具体的な説明】本発明の技術的特徴は、難燃剤
としての赤リン及び金属水酸化物が所定量添加されたゴ
ムに所定量の黒鉛を添加したことにあり、これにより、
黒鉛が燃焼を抑制するように作用するため、難難燃剤を
多量に添加することなく、ドリッピングを防止でき、難
燃性が向上する。また、本発明に係る難燃性ゴム組成物
では、電子写真プロセスに使用される帯電ロール等の導
電性が要求される場合であっても、黒鉛が導電性を有す
るため、従来、導電性の付与を目的として添加される易
燃焼性のカーボンブラックの添加量を抑えられあるいは
無添加にできるので、カーボンブラックの燃焼による難
燃性低下の心配はない。すなわち、本発明に係る難燃性
ゴム組成物では、黒鉛が導電性を有し、しかも、組成物
に難燃性を付与できるために、帯電ロール等の導電性ロ
ールとして好適に使用できるものである。なお、本発明
に係る難燃性ゴム組成物の用途は、導電性ロールに限定
されることはなく、転写ベルト、搬送ベルト等、難燃性
が要求される部材一般に使用できることはもちろんであ
る。DETAILED DESCRIPTION OF THE INVENTION The technical feature of the present invention is that a predetermined amount of graphite is added to a rubber to which a predetermined amount of red phosphorus as a flame retardant and a metal hydroxide is added.
Since graphite acts to suppress combustion, dripping can be prevented and flame retardancy is improved without adding a large amount of flame retardant. Further, in the flame-retardant rubber composition according to the present invention, even if the conductivity of the charging roll used in the electrophotographic process is required, since the graphite has conductivity, conventionally, Since the amount of easily combustible carbon black added for the purpose of addition can be suppressed or not added, there is no concern that the flame retardancy will decrease due to the combustion of carbon black. That is, in the flame-retardant rubber composition according to the present invention, graphite has conductivity, and since it can impart flame retardancy to the composition, it can be suitably used as a conductive roll such as a charging roll. is there. The use of the flame-retardant rubber composition according to the present invention is not limited to the conductive roll, and it is needless to say that the flame-retardant rubber composition can be generally used for members such as a transfer belt and a conveyor belt that require flame retardancy.
【０００７】本発明におけるゴムとしては、ＥＰＤＭ、
ＳＢＲ、ＮＢＲ、ＮＲ、ＩＲ、ウレタン等の易燃性ゴム
一般を使用できる。また、本発明においては、難燃剤と
して赤リンと金属水酸化物を併用しているが、赤リンの
添加量は、ゴム１００重量部に対して５ないし２０重量
部、特に、５ないし１０重量部とするのが好ましい。赤
リンの添加量が５重量部未満であると、難燃効果が希薄
となる傾向があり、赤リンの添加量が２０重量部を超え
ると、物性低下や吸湿性が問題となる。The rubber used in the present invention is EPDM,
Common flammable rubbers such as SBR, NBR, NR, IR and urethane can be used. Further, in the present invention, red phosphorus and a metal hydroxide are used together as a flame retardant, but the addition amount of red phosphorus is 5 to 20 parts by weight, particularly 5 to 10 parts by weight with respect to 100 parts by weight of rubber. It is preferable to be a part. If the amount of red phosphorus added is less than 5 parts by weight, the flame retardant effect tends to be diminished, and if the amount of red phosphorus added exceeds 20 parts by weight, physical properties decrease and hygroscopicity become problems.
【０００８】また、本発明において、金属水酸化物の添
加量は、ゴム１００重量部に対して、３０ないし１００
重量部、特に、４０ないし８０重量部とするのが好まし
い。金属酸化物の添加量が３０重量部未満であると、難
燃効果が希薄となる傾向にあり、金属水酸化物の添加量
が１００重量部を超えると、物性や加工性が低下する傾
向にある。In the present invention, the amount of the metal hydroxide added is 30 to 100 with respect to 100 parts by weight of rubber.
The amount is preferably 40 parts by weight, particularly 40 to 80 parts by weight. If the amount of the metal oxide added is less than 30 parts by weight, the flame retardant effect tends to be diminished, and if the amount of the metal hydroxide added exceeds 100 parts by weight, the physical properties and workability tend to decrease. is there.
【０００９】また、金属水酸化物としては、水酸化アル
ミニウム、水酸化カルシウム、水酸化マグネシウム、塩
基性炭酸マグネシウム〔ｍ・ＭｇＣＯ3 ・Ｍｇ（ＯＨ）
2 ・ｎＨ2 〕等を使用できる。これらのなかでも、水酸
化アルミニウムを使用するのが物性、コストの点から好
ましい。また、本発明において、黒鉛の添加量は、５な
いし１００重量部、特に、１５ないし５０重量部とする
のが好ましい。黒鉛の添加量を５重量部未満とすると、
ドリップ効果が発揮されにくくなり、添加量が１００重
量部を超えると、成形加工性が悪くなる。本発明に係る
難燃性ゴム組成物は、上記の組成を基本とするものであ
るが、通常の配合剤、例えば、補強剤、充填剤、軟化
剤、可塑剤等を必要に応じて適量添加してもよい。As the metal hydroxide, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, basic magnesium carbonate [m.MgCO 3 .Mg (OH)]
2 · nH 2 ], etc. can be used. Among these, it is preferable to use aluminum hydroxide in terms of physical properties and cost. Further, in the present invention, the amount of graphite added is preferably 5 to 100 parts by weight, particularly preferably 15 to 50 parts by weight. If the amount of graphite added is less than 5 parts by weight,
The drip effect is less likely to be exhibited, and if the amount added exceeds 100 parts by weight, moldability becomes poor. The flame-retardant rubber composition according to the present invention is based on the above composition, but an ordinary compounding agent, for example, a reinforcing agent, a filler, a softening agent, a plasticizer, etc. is added in an appropriate amount as necessary. You may.
【００１０】[0010]
【発明の効果】以上のように構成したので、本発明によ
れば、多量の難燃剤を使用することなく、ドリッピング
を抑えられ、難燃性を向上させることのできる難燃性ゴ
ム組成物を提供することができる。As described above, according to the present invention, a flame-retardant rubber composition capable of suppressing dripping and improving flame retardancy without using a large amount of flame retardant. Can be provided.
【００１１】[0011]
【実施例】以下に、実施例によって本発明を説明する。EXAMPLES The present invention will be described below with reference to examples.
【００１２】実施例１ ＥＰＤＭゴム〔日本合成ゴム（株）製 商品名：ＥＰ２
１〕１００重量部に、水酸化アルミニウム〔昭和電工
（株）製 商品名：ハイジライト４２Ｍ〕５０重量部、
赤リン〔日本化学工業（株）製 商品名：ヒシガードＣ
Ｐ〕５重量部、黒鉛粉末〔日本黒鉛工業（株）製 商品
名：黒鉛〕５重量部を添加して加圧ニーダで混練りした
後、ジクミルパーオキサイド４重量部を添加してコンパ
ウンドを作り、ついで、これを２００kg/cm2 、１６０
℃で１５分間加圧加熱し、厚さ３mmのシートを成形し、
この燃焼性をＵＬ規格に準じたＵＬ９４垂直燃焼試験法
で評価すると共に、ドリップの有無の評価、導電性及び
硬さの測定を行い、その結果を表１に示した。なお、硬
さの試験は、旧ＪＩＳ Ｋ６３０１のＪＩＳ−Ａに準じ
て行った。 Example 1 EPDM rubber [manufactured by Nippon Synthetic Rubber Co., Ltd., trade name: EP2
1] 100 parts by weight of aluminum hydroxide [Showa Denko KK trade name: Heidilite 42M] 50 parts by weight,
Red phosphorus [Nippon Kagaku Kogyo Co., Ltd. product name: HISHIGARD C
P] 5 parts by weight and 5 parts by weight of graphite powder (trade name: graphite manufactured by Nippon Graphite Industry Co., Ltd.) were added and kneaded with a pressure kneader, and then 4 parts by weight of dicumyl peroxide was added to form a compound. Make it, then add 200kg / cm 2 , 160
Pressurize and heat at 15 ℃ for 15 minutes to form a 3mm thick sheet,
The flammability was evaluated by the UL94 vertical combustion test method according to the UL standard, the presence or absence of drip was evaluated, and the conductivity and hardness were measured, and the results are shown in Table 1. The hardness test was performed according to JIS-A of old JIS K6301.
【００１３】実施例２ 黒鉛粉末の添加量を１５重量部に変えた以外は、実施例
１と同一の条件でシートを成形し、実施例１と同様の条
件で燃焼性等を評価し、表１に示した。 Example 2 A sheet was formed under the same conditions as in Example 1 except that the addition amount of graphite powder was changed to 15 parts by weight, and the flammability and the like were evaluated under the same conditions as in Example 1 Shown in 1.
【００１４】実施例３ 水酸化アルミニウム及び黒鉛粉末の添加量を各々、４０
重量部、５０重量部に変え、カーボンブラック〔東海カ
ーボン（株）製 商品名：シーストＳＯ〕１０重量部添
加した以外は、実施例１と同一の条件でシートを成形
し、実施例１と同様の条件で燃焼性等を評価し、表１に
示した。 Example 3 The amounts of aluminum hydroxide and graphite powder added were each 40
A sheet was formed under the same conditions as in Example 1 except that 10 parts by weight of carbon black [trade name: Seast SO manufactured by Tokai Carbon Co., Ltd.] was added instead of 50 parts by weight, and the same as in Example 1. The flammability and the like were evaluated under the conditions of Table 1 and shown in Table 1.
【００１５】比較例１ 黒鉛粉末を添加することなく、カーボンブラックを５重
量部添加した以外は、実施例１と同一の条件でシートを
成形し、実施例１と同様の条件で燃焼性等を評価し、表
１に示した。 Comparative Example 1 A sheet was molded under the same conditions as in Example 1 except that 5 parts by weight of carbon black was added without adding graphite powder. It was evaluated and shown in Table 1.
【００１６】比較例２ カーボンブラックの添加量を１５重量部に変えた以外
は、比較例１と同一の条件でシートを成形し、比較例１
と同様の条件で燃焼性等を評価し、表１に示した。 Comparative Example 2 A sheet was molded under the same conditions as in Comparative Example 1 except that the amount of carbon black added was changed to 15 parts by weight.
The flammability and the like were evaluated under the same conditions as in Table 1 and shown in Table 1.
【００１７】比較例３ 水酸化アルミニウム、カーボンブラック、及びジクミル
パーオキサイドの添加量を各々、４０重量部、１０重量
部、６重量部に変え、さらに、導電性カーボンブラック
〔電気化学工業（株）製 商品名：電化ブラック〕５０
重量部を添加した以外は、比較例１と同一の条件でシー
トを成形し、比較例１と同様の条件で燃焼性等を評価
し、表１に示した。 Comparative Example 3 The addition amounts of aluminum hydroxide, carbon black and dicumyl peroxide were changed to 40 parts by weight, 10 parts by weight and 6 parts by weight, respectively, and conductive carbon black [Electrical Chemical Industry Co., Ltd. ) Product name: electrified black] 50
A sheet was formed under the same conditions as in Comparative Example 1 except that parts by weight were added, and the flammability and the like were evaluated under the same conditions as in Comparative Example 1 and shown in Table 1.
【００１８】[0018]
【表１】 [Table 1]
Claims (1)
いし２０重量部、金属水酸化物３０ないし１００重量
部、及び黒鉛５ないし１００重量部を配合してなること
を特徴とする難燃性ゴム組成物。1. A flame-retardant composition comprising 5 to 20 parts by weight of red phosphorus, 30 to 100 parts by weight of metal hydroxide, and 5 to 100 parts by weight of graphite with respect to 100 parts by weight of rubber. Rubber composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10310094A JPH07309976A (en) | 1994-05-17 | 1994-05-17 | Flame-retardant rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10310094A JPH07309976A (en) | 1994-05-17 | 1994-05-17 | Flame-retardant rubber composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07309976A true JPH07309976A (en) | 1995-11-28 |
Family
ID=14345215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10310094A Withdrawn JPH07309976A (en) | 1994-05-17 | 1994-05-17 | Flame-retardant rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07309976A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010149354A1 (en) * | 2009-06-24 | 2010-12-29 | Zephyros Inc | Improved insulation materials |
| JP2013049737A (en) * | 2011-08-30 | 2013-03-14 | Howa Kasei Co Ltd | Flame retardancy polyurethane elastomer raw material composition, and molding excellent in flame retardancy formed by the same |
| US8647744B2 (en) | 2006-04-05 | 2014-02-11 | National Institute Of Advanced Industrial Science And Technology | Graphite clay composite material, process for producing the same, gasket or packing comprising the composite material, and clay dispersion used for the composite material |
| CN112251018A (en) * | 2020-11-05 | 2021-01-22 | 湖南龙智新材料科技有限公司 | Novel flame-retardant nylon heat-conducting material |
| US11421074B2 (en) | 2015-01-30 | 2022-08-23 | Zephyros, Inc. | Adhesive material, and method of use thereof |
-
1994
- 1994-05-17 JP JP10310094A patent/JPH07309976A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8647744B2 (en) | 2006-04-05 | 2014-02-11 | National Institute Of Advanced Industrial Science And Technology | Graphite clay composite material, process for producing the same, gasket or packing comprising the composite material, and clay dispersion used for the composite material |
| WO2010149354A1 (en) * | 2009-06-24 | 2010-12-29 | Zephyros Inc | Improved insulation materials |
| JP2013049737A (en) * | 2011-08-30 | 2013-03-14 | Howa Kasei Co Ltd | Flame retardancy polyurethane elastomer raw material composition, and molding excellent in flame retardancy formed by the same |
| US11421074B2 (en) | 2015-01-30 | 2022-08-23 | Zephyros, Inc. | Adhesive material, and method of use thereof |
| CN112251018A (en) * | 2020-11-05 | 2021-01-22 | 湖南龙智新材料科技有限公司 | Novel flame-retardant nylon heat-conducting material |
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